Eraser.



F. W. PUlVl'Pl-IREY ERASBR.

APPLICATION FILED MAY 25, 190s 921 ,456., Patented May 11, 1909 8 /5 S-ns /7 u Snom/kon Figi/ /hry Witnesses ne: Nomzls Frrzns ca., wlsnmarcu, n. c

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FRANK W. PUMPHREY, `OF OWENSBORO, KENTUCKY.

ERASER.

Specication of Letters Patent.

Patented May 11, 1909.

Application 1ed. may 25, 1908. Serial No. 434,784.

To all whom it may concern.'

Be it known that I, FRANK W. PUMPHREY, l a citizen of the United States, residing at l Owensboro, in the county of Daviess, State of Kentucky, have invented certain new and l useful Improvements in Erasers; and l do hereby declare the following to be a full, exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the saine. i

The invention relates to an eraser and more i particularly to the class of erasers permai nently or detachably connected to pencils.

The primary object of the invention is the provision of a rotary eraser mounted in a sleeve which is adapted to be permanently or detachably .connected to one extremity ofV the pencil, the said rotatable eraser being automatically locked in a 'fixed position against rotation while in use.

Another object of the invention is the provision of a rotatable or revolving rubber eraser suitably mounted in a holder having means thereon for locking the eraser against rotation and the said means being capable of releasing the eraser whereby the same may be .rotated to present a fresh or unworn surface of the eraser for use.

ln the drawings accompanying and forming part of this spec'fication is illustrated one advantageous form of embodiment of the invention which to enable those skilled in the art to practice the same will be set forth at l length in the following description while the novelty of the invention will be included in the claims succeeding said description. l

ln the drawings z-iligure 1 is a side view i of the invention. Fig. 2 is an edge view thereof. Fig. 3 is a longitudinal sectionall view.

Similar reference characters indicatecon responding parts throughout the several views in the drawings.

In the drawings, the numeral 5 designates a holder or sleeve preferably formed of metal and having at one extremity a longitudinal slit or slot 6 so as to form a split socket extremity 7 into which the end of a pencil is inserted and frictionally held, however', the said holder may be permanently connected to a pencil in any suitable manner.

The opposite extremity of the holder is l bifurcated as at S to form oppositely disposed extensions or ears 9 in parallel relation to lor pin 10 upon which latter is rotatably mounted between the ears 9 a sleeve 9 carrying a rubber eraser disk or wheel 11 having on opposite sides thereofl metal disks 12 wnich latter are rigidly or permanently lixed to the eraser wheel 11 and form wearing or bearing disks.

In one of the metal disks 12 and circumferentially of the axis or pin 10 are a lurality of openings 13 spaced a suitable distance from each other and which are adapted to receive a locking pin 14 secured in the free extremity of a flat spring member 15 mounted in an elongated recess 16 formed in the holder 5 and which spring member has its opposite end secured by a rivet or other fastener 17 to a plug 18 within the holder and which fastener is also riveted to one side of said holder.

The elongated recess 16 corresponds to the spring member 15 with res ect to its shape and is extended beyond tie free end thereof a distance to form an entrance 19 to allow the raising of the spring to disengage the locking pin 14 from one of the openings 13 whereby the eraser disk or wheel 11 will be free to rotate in the holder. When it is again desired to lock the eraser disk or wheel 11 against rotation the spring member 15 is released, thereby permitting the locking pin 14 to engage in one of the openings 13 in the metal disk at one side of the rubber eraser' wheel or disk and consequently the latter will be held in a locked position.

lt will be obvious by permitting the eriodical rotation of the eraser disk or vvigheel in this manner a fresh surface or unworn portion of the eraser disk or wheel will be presented for use and in this manner the periphery of the eraser wheel or disk may be evenly worn away.

What is claimed is- 1. An eraser of the class described comprising a split sleeve having spaced parallel ears at one end thereof', one of said ears containing an elongated recess, a rubber eraser wheel rotatably mounted between the ears, disks of less diameter than the eraser wheel and fixed to opposite sides thereof, one of said disks having a series of perforations circumferentially therein, a leaf spring disposed within the elongated recess and being normally flush with the outer face of the sleeve, and a locking pin projecting inwardly from the free end of said spring and noreach other and in which is mounted an axis l mally engaging one of the perforations in the disk, the said leaf spring being of less length than the elongated recess to permit the release of the locking pin from engagement With the perforated disk.

2. An eraser of the class described comprising a cylindrical holder having a slit at one end thereof to ermit the insertion of a pencil end in the ho der, spaced parallel ears at the opposite end of the holder, a pin forming an axis carried by the ears, a sleeve surrounding said pin, a rubber eraser Wheel disposed between the ears and supported by the sleeve, Wearing disks fixed to opposite sides of the eraser Wheel, one of said disks containing a series of circumferentially'arranged perforations, a spring member supported by said holder' and normally ilush with the outer face thereof and means carried at the free end of the spring member for locking engagement With the perforated disk.

In testimony whereof, I affix my signature, in presence of two Witnesses.

FRANK WT. PUMPHREY. llitnesses:

LA VEGA CLEMEN'rs, SAM SANsBURY. 

